在android中列出捕获图像的图像Url＆＃s

Question

1. 我正在捕捉图像并存储它
2. 图像以指定路径创建
3. 但我无法通过光标
显示图像

如何解决此问题

捕捉它后如何存储图像::

private void createFile(byte[] fileData) throws IOException {

        FileOutputStream out=null;
        try {

            //Create the directory
            String mDirectoryPath = Environment.DIRECTORY_PICTURES + LinksAndKeys.DIRECTORY_PATH_FOR_IMAGES;
            String mImageName = System.currentTimeMillis()+".jpg";
            File root = Environment.getExternalStoragePublicDirectory(mDirectoryPath);
            File dir = new File(root + File.separator);
            if (!dir.exists()) dir.mkdir();

            //Create file..
            File file = new File(root + File.separator + mImageName);
            file.createNewFile();

            out = new FileOutputStream(file);
            if(out!=null){
                out.write(fileData);
            }

        }
        catch (FileNotFoundException e) {
            e.printStackTrace();
        }catch (IOException e) {
            e.printStackTrace();
        }catch (Exception e) {
            e.printStackTrace();
        }finally {
            out.close();
        }

    }

我如何尝试获取已创建图像的URI ::

 private ArrayList<String> loadPhotosFromNativeGallery() {


        final String[] columns = { MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID };
        final String orderBy = MediaStore.Images.Media.DATE_TAKEN;

        Cursor imagecursorExternalUri = getActivity().managedQuery(
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null,
                null, orderBy + " DESC");

        Cursor imagecursorInternalUri = getActivity().managedQuery(
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null,
                null, orderBy + " DESC");

        Cursor[] cursorArray = { imagecursorExternalUri, imagecursorInternalUri};

        MergeCursor mMergeCursor = new MergeCursor(cursorArray);


        ArrayList<String> imageUrls = new ArrayList<String>();

        for (int i = 0; i < mMergeCursor.getCount(); i++) {
            mMergeCursor.moveToPosition(i);
            int dataColumnIndex = mMergeCursor.getColumnIndex(MediaStore.Images.Media.DATA);
            imageUrls.add(mMergeCursor.getString(dataColumnIndex));

            System.out.println("=====> Array path => "+imageUrls.get(i));
        }


        return imageUrls;
    }

Answer 1

系统会在安装SD卡时扫描SD卡以查找任何新图像（和其他）文件。如果以编程方式添加文件，则必须扫描新文件。你可以使用以下方法来做到这一点：

MediaScannerConnection.scanFile(this, new String[] { file.getPath() }, new String[] { "image/jpg" }, null);

您可以从this link

找到更多信息

您可以直接插入数据：

  ContentValues values = new ContentValues();
  values.put(MediaStore.Images.Media.TITLE, "YourTitle");
  values.put(MediaStore.Images.Media.DATE_TAKEN, System.currentTimeMillis());
  values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpg");
  values.put(MediaStore.MediaColumns.DATA, filePath);

  context.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);